About Used ASIC Global
Used ASIC Global is a brand operated by Xi’an Tengcheng Electronic Technology Co., Ltd.
Industrial Infrastructure Pedigree Applied to High-Density Compute
Used ASIC Global is the specialized hardware supply, diagnostic, and secondary-market lifecycle platform operated by Xi’an Tengcheng Electronic Technology Co., Ltd. (西安腾诚电子科技有限公司). Established on May 22, 2007, with a registered capital of 30,000,000 RMB (Unified Social Credit Code: 916101137974913521), our corporate headquarters and operational testing labs occupy the 24th Floor of Building B3 in Jinye Times, located in the Xi’an High-Tech Development Zone (Shaanxi, China).
For nearly two decades, our parent organization has delivered mission-critical telecommunications networks, enterprise data centers, fiber-optic transmission systems, and industrial monitoring infrastructure. We serve as an approved contractor for major national industrial entities—including Tuha Oilfield, Qinghai Oilfield, Changqing Drilling, and China Petroleum Materials—and delivered the integrated monitoring renovation for Xi’an Metro Line 2. Recognized continuously as a certified High-Tech Enterprise and provincial Technology SME, we bring an institutional standard of engineering discipline to the cryptocurrency computing sector.
Unlike transient hardware traders or anonymous overseas brokers, Used ASIC Global operates dedicated component-level diagnostic laboratories, ultrasonic PCB cleaning lines, and multi-megawatt burn-in facilities. Every used or refurbished machine that enters our catalog undergoes rigorous board-level testing, serial tracking, and transparent condition disclosure before export.
Three Transparent Equipment Tiers, Zero Ambiguity
We stock major Proof-of-Work hardware from Bitmain Antminer, MicroBT WhatsMiner, Canaan Avalon, IceRiver, and Goldshell. Every unit is strictly categorized into one of three documented tiers so buyers know exact component history.
Grade A+ · Factory-New Units
Factory-sealed machines sourced directly through our established commercial channels with primary hardware manufacturers. Retains official factory warranty and zero prior operating hours.
Grade A · Certified Refurbished
Operational hardware serviced in our Xi’an laboratory. Faulty chips are replaced with factory-spec silicon, hashboards receive fresh thermal interface compound, and units complete a 48-hour burn-in with full diagnostic disclosure.
Grade B · Tested Farm Workhorses
Intact, fully operational farm pulls with minor cosmetic chassis wear. Verified for nominal hashrate, stable board temperatures, and fan integrity, delivering the lowest capital cost per terahash.
The "Zero-Surprise" Condition Disclosure
The primary hazard in the secondary ASIC market is concealed repair work: machines sold as "like new" that conceal burnt PCB traces, bypassed voltage domains, or deteriorating fan bearings. We reject this practice entirely.
Before any used unit is approved for sale, our engineers inspect the power plane, record individual hashboard voltages, and evaluate thermals under load. If a machine required no repairs, its listing states that explicitly. If we replaced an ASIC chip, repaired a buck converter, or rebuilt an APW power supply, every repaired component is documented directly in the shipment file.
Every certified machine is covered by our comprehensive one-year (365 days) warranty, backed by direct factory parts and technician support from our Xi’an facility.
6-Stage Diagnostic & Refurbishment Protocol
Every pre-owned system entering our Xi’an facility moves through a standardized six-stage qualification sequence before receiving international export approval.
Optical Inspection & Ultrasonic Cleaning
Disassembly of fans, shrouds, and hashboards. Boards undergo high-pressure dry air decontamination followed by ultrasonic chemical baths to remove conductive mining dust and flux residue.
Trace Impedance & Voltage Diagnostics
Engineers test power domains with digital oscilloscopes, verifying low-dropout (LDO) regulators, buck converters, level shifters, and EEPROM integrity across each individual hashing domain.
Component-Level SMT Micro-Soldering
Faulty ASIC chips are desoldered and replaced using precision BGA reballing stations. Heatsinks are re-seated with industrial-grade phase-change thermal interface materials.
Continuous 48-Hour Full-Load Burn-In
Machines run at 100% computational load in temperature-monitored chambers. Diagnostic software logs chip temperature deltas, hardware error rates, and fan tachometer stability.
Laser Serialization & Bench Test Report
Every unit is issued a unique bench-test report recording wall-plug wattage, actual terahash yield, board serials, and inspection timestamps, signed off by the lead QC technician.
Anti-Static Vacuum Seal & Export Packaging
Units are packed in ESD moisture-barrier foil bags with desiccant, encased in molded high-density EPE foam armor, and boxed in reinforced multi-wall export cartons.
Have Mining Fleets or Decommissioned Units to Sell?
We purchase commercial batches of operational and faulty mining hardware from institutional farms, hosting facilities, and individual operators worldwide. We provide binding valuations within 24 hours based on real-time hardware yields and current market spot rates.
Remote Diagnostic Log Submission
For active fleets, our engineers review 24-hour pool telemetry, kernel logs, and serial sheets. For offline or faulty hardware, submit batch photos and diagnostic summaries.
Binding Commercial Quotation
Receive a formal purchase order with agreed unit pricing. Valuations are locked in writing prior to shipment, eliminating unexpected freight-dock renegotiations.
Secured Freight & Rapid Settlement
We coordinate freight collection, provide insured transport coverage, and execute rapid capital settlement upon physical intake and serial verification at our facility.
Institutional Repair Services for Third-Party Fleets
Our Xi’an engineering lab accepts ASIC hardware purchased from any supplier or previous operator. We repair hashboards, control boards, and server-grade power supplies across Bitmain Antminer, MicroBT WhatsMiner, Canaan Avalon, and IceRiver lines.
We maintain a comprehensive inventory of original ASIC chips, power MOSFETs, inductors, and custom cooling fans. Clients receive itemized fault diagnostic reports before any billing or billable repair work begins.
Comprehensive One-Year Coverage on Certified Used Units
Every certified pre-owned miner purchased from Used ASIC Global includes a standard one year (365 days) limited warranty. If a covered component fails under normal operating conditions, our engineering lab repairs or replaces it.
Factory-new units retain full manufacturer warranty support. For certified refurbished machines, our service center covers parts, labor, and return freight for approved warranty claims.
Warranty Scope & Exclusions:
Coverage applies to component and manufacturing defects under nominal environmental conditions. Exclusions include physical impact damage, overvolting, liquid immersion without factory hydro conversion, and operation in ungrounded electrical installations. Review our published after-sales documentation for full RMA guidelines.
Turnkey Facility Hosting & Instant Hashrate Contracts
For enterprise operators seeking direct computing returns without international freight delays, customs duties, or on-site facility overhead, Used ASIC Global provides managed colocation in China & Singapore Colocation Facilities with stable, low-cost power and 24/7 telemetry.
Hardware can be purchased and deployed directly onto our racks within 24 hours. We also offer managed cloud computing allocations with scheduled daily settlements for institutional investors.
Consult with Our Engineering Team
Whether sourcing high-volume certified miners, arranging fleet liquidation, or requesting custom board repairs, our Xi’an engineering team is available to assist.